What is the diaphragma sellae?
What is the diaphragma sellae?
The diaphragma sellae is a sheet of dura mater that forms the roof of the pituitary fossa. It is described as a two-layer sheet of dura mater that merges anteriorly with the dura covering the planum sphenoidale and the anterior cranial fossa and posteriorly with the dura covering the dorsum sellae and the clivus.
What are the three major structures of the sella turcica?
Anatomy of the Sella Turcica Tuberculum sellae (anterior) Dorsum sellae (posterior)
Why is it called the sella turcica?
The sella turcica derives its name from the Latin words for Turkish saddle. The name reflects the anatomic shape of the saddle-like prominence on the upper surface of the sphenoid bone in the middle cranial fossa, above which sits the pituitary gland.
What is tuberculum sella?
The tuberculum sellae (or the tubercle of the sella turcica) is a part of the sphenoid bone that is an elevation behind the chiasmatic groove. A variable slight to prominent median elevation forming the posterior boundary of the chiasmatic groove and the anterior boundary of the hypophysial fossa.
What is a sella in the brain?
The pituitary is a small gland located just underneath the brain. It is attached to the bottom of the brain by the pituitary stalk. The pituitary sits protected inside a saddle-like bony compartment in the base of the skull. This compartment is called the sella.
What part of the body is the sella?
The sella turcica is a saddle-shaped depression located in the bone at the base of skull (sphenoid bone), in which resides the pituitary gland.
What is the function of the sella?
Within your skull, there’s a small, bony nook at the base of your brain that holds and protects your pituitary gland (which controls how hormones work in your body). This tiny structure is called the sella turcica.
What part of the brain sits in the sella turcica?
What is the function of the sella turcica?
Function. The sella turcica forms a bony seat for the pituitary gland.
What is tuberculum sellae meningioma?
Tuberculum sellae meningiomas are a classic tumor of the anterior fossa that present in patients with gradual visual deterioration secondary to optic apparatus compression. If untreated, complete blindness can occur.
Where is a tuberculum sellae meningioma?
Tuberculum sellae meningiomas (TSMs) arise from the tuberculum sellae, a bony structure along the midline skull base located just anterior and inferior to the optic chiasm. It is flanked by the optic chiasm and optic nerves, carotid arteries, the cavernous sinus, pituitary gland, and sphenoid sinus.
What is a sella MRI?
This compartment is called the sella. When the pituitary gland shrinks or becomes flattened, it cannot be seen on an MRI scan. This makes the area of the pituitary gland look like an “empty sella.” But the sella is not actually empty. It is often filled with cerebrospinal fluid (CSF).
Where is the sella?
Where is the sella located in the brain?
What part of the brain is the sella?